Battery state diagnostic apparatus for battery set and battery module charger/discharger

  • US 6,072,300 A
  • Filed: 11/12/1998
  • Issued: 06/06/2000
  • Est. Priority Date: 11/14/1997
  • Status: Expired due to Fees
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First Claim
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1. A diagnostic apparatus for diagnosing a state of charge of a battery set including a plurality of battery modules each having a plurality of cells, comprising:

  • a no-load voltage calculating section for calculating no-load voltage of the cell;

    a first judging section for determining whether a state of charge of each of the cells is normal or abnormal based on the no-load voltage of the cell calculated by the no-load voltage calculating section; and

    a second judging section for determining that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery module which is required to be replaced.

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